Magnetic porous nano-carbon catalysts supported silver nanoparticles derived from chitin and their application in catalytic reduction reactions |
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Authors: | Guozhen Wang Bowen Wang Xi Chen Ying Pei Shunchao Zhou Wenping Ding |
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Affiliation: | 1. Key Laboratory for Deep Processing of Major Grain and Oil, Wuhan Polytechnic University, Wuhan, China;2. Beijing Laboratory of Food Quality and Safety, Beijing Technology and Business University, Beijing, China;3. School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, China;4. Hubei Geological Research Laboratory, Wuhan, China |
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Abstract: | The exploitation of recycled carbonaceous catalysts from renewable biomass resources such as chitin is a crucial issue for the development of the sustainable society. In this article, the chitin-based N and O doped carbon microspheres (ChC) were fabricated by a simple dissolution, sol–gel transformation, and the carbonization methods. Subsequently, the novel magnetic Ag-Fe3O4@chitin-based carbon microspheres catalyst (MChC) was successfully constructed through the in situ redox reaction. The as-prepared MChC possessed rich micropores with high-surface area, and a narrow size distribution (50–120 μm). The Ag-Fe3O4 nanoparticles were immobilized through the interaction with C, N, and O atoms in the pores of MChC. The reduction of 4-nitrophenol was applied to evaluate the catalytic activity of MChC. 4-Nitrophenol (4-NP) could be fully reduced to 4-aminophenol (4-AP) in 5 min with the catalyst MChC-45. Moreover, MChC could be collected in solution with an external magnet in 8 s and remained relatively high-catalytic activity after 10 cycle times. This work provided novel ideas for the fabrication of doped carbon material from biomass and promoted its utilization in nanocatalytic applications. |
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Keywords: | biopolymers and renewable polymers catalysts porous materials |
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